From the modeling point of view, at most, it will be in the late Qing Dynasty, not earlier. The material of Ming and Qing plain originals basically depends on the material, such as Hetian sapphire, and the material is also general. A few hundred dollars is acceptable, and less than 500 is more appropriate.
The appearance is perfect, generally around 20,000 to 50,000 is a normal market. To be exact, in the Qing Dynasty, Jasper Banzhi (Wadayama Jasper) was well preserved and had a perfect appearance. Generally, it is about 8000 ~ 1 000. Of course, the modern antique Jasper Banzhi (made in Qinghai Jasper Mountain), a few hundred yuan is also a real market.
If Banzhi has high historical value, good color, high transparency, no impurities, good jade quality, hard texture and clear description, then it is conservatively estimated to be above 500,000. If the above aspects are common, it will cost tens of thousands of dollars at most, and it can sell for 1000 yuan in the antique market.
At the famous Sotheby's auction in Hong Kong, a set of boxed Qing Gan Long Yu and Hetian Yu Banzhi was sold for HK$ 47.36 million, setting the highest price for jade Banzhi in the auction market. These achievements were unimaginable in the 1990s.